72816520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{8389}}^1$

素因数の和:8438

約数の個数: 64

約数和(自身を含む): 193305600

約数和(自身を除く): 120489080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8389, 8680, 16778, 33556, 41945, 58723, 67112, 83890, 117446, 167780, 234892, 260059, 293615, 335560, 469784, 520118, 587230, 1040236, 1174460, 1300295, 1820413, 2080472, 2348920, 2600590, 3640826, 5201180, 7281652, 9102065, 10402360, 14563304, 18204130, 36408260, 72816520]

約数ペア:

[(1, 72816520), (2, 36408260), (4, 18204130), (5, 14563304), (7, 10402360), (8, 9102065), (10, 7281652), (14, 5201180), (20, 3640826), (28, 2600590), (31, 2348920), (35, 2080472), (40, 1820413), (56, 1300295), (62, 1174460), (70, 1040236), (124, 587230), (140, 520118), (155, 469784), (217, 335560), (248, 293615), (280, 260059), (310, 234892), (434, 167780), (620, 117446), (868, 83890), (1085, 67112), (1240, 58723), (1736, 41945), (2170, 33556), (4340, 16778), (8389, 8680)]